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// Copyright 2017 The Chromium OS Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//! Implements virtio devices, queues, and transport mechanisms.
mod queue;
mod mmio;
mod block;
mod vhost_net;
pub use self::queue::*;
pub use self::mmio::*;
pub use self::block::*;
pub use self::vhost_net::*;
const DEVICE_ACKNOWLEDGE: u32 = 0x01;
const DEVICE_DRIVER: u32 = 0x02;
const DEVICE_DRIVER_OK: u32 = 0x04;
const DEVICE_FEATURES_OK: u32 = 0x08;
const DEVICE_FAILED: u32 = 0x80;
const TYPE_NET: u32 = 1;
const TYPE_BLOCK: u32 = 2;
const INTERRUPT_STATUS_USED_RING: u32 = 0x1;
/// Offset from the base MMIO address of a virtio device used by the guest to notify the device of
/// queue events.
pub const NOITFY_REG_OFFSET: u32 = 0x50;
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